You Searched For
Start Over You searched for: Date 1905 to 1909 Remove constraint Date: <span class="from" data-blrl-begin="1905">1905</span> to <span class="to" data-blrl-end="1909">1909</span>-
262 items
The Seven Food Colors
- 1907
Notebook in which Charles F. Chandler (1836-1925) has pasted an assortment of government regulations and other items of interest related to food inspection and public health. Alongside these printed regulations are…
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Hand-crank Centrifuge, Babcock Milk Tester
- After 1900 – before 1950
A metal, hand-crank centrifuge with a three-pronged metal base. The base is painted a rusty red color and has been attached to a wooden board for stability. A long metal crank on the side of the base bends at a…
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The Influence of Various Manures on the Growth of Wheat
- Part of The Romance of Modern Chemistry
- 1909
Photographic reproduction depicts bundles of wheat grown on an experimental farm at Rothamsted, England with varying amounts of manure and chemical fertilizers. The first column shows the year 1878 with the second…
- Author Philip, James Charles
- Creator Of Work Hall, A. D.
- Subject Science--Study and teaching, Chemistry, Textbooks, Rothamsted Experimental Station, Manures, Fertilizers, Agriculture, Wheat--Research
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Microscope photography of adulterated food
- Part of The Romance of Modern Chemistry
- 1909
Entitled "How the Microscope Reveals Adulteration," photographic reproduction depicts arrowroot adulterated with rice starch. Both under magnification, the left image illustrates rice starch with the right side showing…
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Bureau of Chemistry Oil, Fat, and Wax Laboratory
- 1901 – before 1928
General view of two employees working in the Bureau of Chemistry's Oil, Fat, and Wax Laboratory, with view of assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, the Oil, Fat, and…
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Bureau of Chemistry Nitrogen Laboratory
- 1901 – before 1928
General view of the Bureau of Chemistry's Nitrogen Laboratory showing assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, the Nitrogen Laboratory conducted investigations into…
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Bureau of Chemistry Nitrogen Laboratory
- 1901 – before 1928
General view of an employee conducting an analysis of an unidentified substance in the Bureau of Chemistry's Nitrogen Laboratory. Part of the U.S. Department of Agriculture, the Nitrogen Laboratory conducted…
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Bureau of Chemistry Nitrogen Laboratory
- 1901 – before 1928
General view of an employee conducting an analysis of an unidentified substance in the Bureau of Chemistry's Nitrogen Laboratory. Part of the U.S. Department of Agriculture, the Nitrogen Laboratory conducted…
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Bureau of Chemistry Drug Laboratory
- 1901 – before 1928
General view of two employees at work in a Bureau of Chemistry Drug Laboratory, with view of assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, such laboratories commonly…
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Agricultural Research Service Drug Laboratory
- 1901 – before 1928
General view of two employees at work in an Agricultural Research Service Drug Laboratory, with view of assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, such laboratories commonly…
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Bureau of Chemistry Water and Beverage Laboratory
- After 1901 – 1928
General view of an employee in the Bureau of Chemistry's Water and Beverage Laboratory conducting an analysis on an unidentified substance. Assorted sample jars and scientific apparatus are visible in the photograph.…